Siemens SINUMERIK 840D sl Function Manual page 667

27135 Checksum group error safe monitoring on at least one axis. Confirmation and acceptance test required!
Parameter
Explanation A checksum protects the relevant MD to parameterize the axis-specific safety functionality. The alarm indi‐
cates that at least on one axis, at least one of the axis-specific checksums no longer matches the saved
checksum, i.e. that a data item was illegally changed or is corrupt.
This alarm is displayed during the commissioning phase (SPL-commissioning mode active) as global group
alarm for the axis-specific checksum alarm 27132.
This alarm reduction is parameterized in MD10094 $MN_SAFE_ALARM_SUPPRESS_LEVEL (100 position
set).
Response Alarm display
Interface signals are set
Mode group not ready
Channel not ready
NC start disable in this channel
NC stop for alarm
Remedy Check MD Have the checksum re-calculated and confirm.
Check the hardware components and drive assignment.
Safety functions (motion monitoring functions) should be subject to a new acceptance test.
Program con‐ Switch control system OFF and ON again.
tinuation
27140 Waiting for Motor Module for at least one axis
Parameter
Explanation Alarm when booting as long as the Motor Module of at least one axis is still not ready for SI. When booting,
communications to the Motor Module have still not been established as the safety functions for at least one
axis are still not available.
The alarm display can be set in MD10094 $MN_SAFE_ALARM_SUPPRESS_LEVEL (MD < 3) in such a way
that it can be individually displayed as to whether communications have already been established for each
axis. The alarm is continuously active when booting if at least one drive does not communicate. Otherwise,
the alarm is only briefly active - and is then automatically cleared again.
Possible causes for the alarm being permanently present:
● The safety motion monitoring functions are only activated in MD36901
$MA_SAFE_FUNCTION_ENABLE, however, not in the corresponding parameter of the associated drive
(p9501).
● The axis → drive assignment via MD36906 $MA_SAFE_CTRLOUT_MODULE_NR, 10393
$MN_SAFE_DRIVE_LOGIC_ADDRESS or p0978 is incorrect
● PROFIBUS connector fallen out.
Response Alarm display
Interface signals are set
Remedy Check that parameter p9501 or the assignment of the drives via MD36906 $MA_SAFE_CTRLOUT_MOD‐
ULE_NR, MD10393 $MN_SAFE_DRIVE_LOGIC_ADDRESS, p0978 is correct.
Program con‐ The alarm is no longer displayed when the alarm cause has been removed. No other operator actions are
tinuation required.
Safety Integrated
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
11.2 NCK safety alarms for SINUMERIK 840D sl
Diagnostics
667